A:AnswerThis unit is manufactured for the 2ng generation echo dot.
The third generation has cloth around the speakers and will not fit in the dock.
Best Regards,
iHome Support
https://www.ihomeaudio.com
A:AnswerThe display has 8 settings; including OFF. Touch the Dimmer Button on top of the unit as needed to adjust the display brightness.
If you have any further questions, please feel free to contact us at 1-800-288-2792; M-F between 8AM-10PM EST.
Best Regards,
iHome Support